Loudspeaker heat sink



FIG. 1 is a perspective view of a loudspeaker heat sink showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a side elevation view, viewed from the left-hand side of FIG. 2; and,

FIG. 5 is a cross-sectional view taken along line 5-5 of FIG. 2.

The broken lines illustrate portions of the loudspeaker heat sink and form no part of the claimed design. 

CLAIM The ornamental design for a loudspeaker heat sink, as shown and described. 